from selenium import webdriver
from selenium.webdriver import ActionChains
import time

driver = webdriver.Chrome()

driver.get('https://news.sina.com.cn/')

time.sleep(3)
driver.find_element_by_xpath('//*[@id="blk_cNav2_01"]/div/a[15]/span').click()

action = ActionChains(driver)

element = driver.find_element_by_link_text(u'数码')

action.move_to_element(element).perform()

time.sleep(3)

driver.find_element_by_xpath('//*[@id="tech_head"]/div[7]/div/ul/li[1]/a').click()

driver.close()